Interactive Projection Touch Input With Absolute Coordinate Mapping
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Solution Overview
Problem
Existing interactive projection systems lack the ability to transmit absolute coordinates, requiring dedicated software or apps on external devices for control, and are not true peripheral devices due to self-contained CPUs and operating systems.
Innovation Solution
An interactive projection input and output device that includes a projecting module, coordinated operation capturing module, coordinated instruction generating module, and wireless transmission module to correlate projection regions with user operations, generating position information instructions identifiable by the external device's operating system without the need for additional software or apps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional touch projection device uses self-contained CPU and operating system, then it can independently process control operations, but it cannot achieve general coordinated control across system and device and requires dedicated APP or software on external devices
Solution Approach 1:
The patent extracts the operating system and CPU from the projection device, transforming it from a standalone control system into a peripheral input device. The projection device now only captures touch operations and transmits them to the external device's operating system, eliminating the need for dedicated APPs on external devices and enabling universal compatibility across different operating systems (Windows, macOS, Linux, Android, iOS).
Solution Approach 2:
By removing the self-contained operating system and adopting a peripheral device architecture, the projection device achieves universal compatibility with multiple external devices running different operating systems. The device can control various external devices through standard input protocols without requiring device-specific software installations.
2Ease of operation
If virtual keyboard or virtual mouse is used, then traditional keyboard can be replaced, but absolute coordinates cannot be transmitted and virtual touch screen cannot be implemented
Solution Approach 1:
The patent replaces traditional mechanical input devices (physical keyboard) with a projection-based touch interface. The projection device displays a virtual keyboard on a projection surface, and touch operations on the projected image are captured and transmitted as precise coordinate information, enabling both virtual interface functionality and accurate coordinate transmission.
Solution Approach 2:
The patent introduces an coordinate transformation module as an intermediary between the projection surface and the external device. This module captures touch positions on the projection surface, transforms them into absolute coordinates relative to the external device's display, and transmits them accurately, enabling virtual touch screen functionality with precise coordinate transmission.
3Ease of operation
If dedicated APP or software is installed on external device, then control operation can be achieved, but device complexity increases and energy consumption rises
Solution Approach 1:
The patent extracts the control processing functionality from the projection device and relocates it to the external device's operating system. The projection device becomes a simple input peripheral that only captures touch operations and transmits them, eliminating the need for dedicated APPs or software on external devices and reducing overall system complexity.
Solution Approach 2:
The external device's operating system handles the control operations directly without requiring additional dedicated software. The system uses existing input processing mechanisms to handle the touch coordinate information from the projection device, allowing the external device to serve itself without additional software overhead.
4Ease of operation
If self-contained CPU and operating system are used in projection device, then independent processing is achieved, but energy consumption increases
Solution Approach 1:
The patent removes the CPU and operating system from the projection device, transferring all processing responsibilities to the external device. The projection device now only performs simple touch capture and data transmission functions, dramatically reducing its energy consumption while maintaining full processing capability through the external device's computing resources.
Data Source
AI summary
The present disclosure relates to an interactive projection input and output device, which includes: a projecting module, configured to display a screen mirroring content from an external device in a projection region of a projection picture corresponding to the external device; a coordinated operation capturing module, configured to: determine a first coordinate of a user coordinated operation point corresponding to a user coordinated operation behavior in a first coordinate system; a coordinated instruction generating module, configured to, generate a position information instruction according to the first coordinate of the user coordinated operation point and regional position information of the projection region in the first coordinate system; and a wireless transmission module, configured to receive screen mirroring information from the external device, and send the position information instruction to the external device, so as to operate the external device.